Intertek TASMAN EP & HP - Page 25

Page 25 of 80
Direct Vent Information (continued)
Natural Gas EP Unit ONLY
Vertical Vents
Acceptable Configurations
Example 1
V Value = A (4') + C (3') = 7'
H Value = 2B (2 x 2') = 4'
V Value = Total length of all vertical sections in
feet.
H Value = Total length of all horizontal sections in
feet.
NOTE:
a) for H & V values for 45 venting see
Chart IV.
b) elbows are not counted in H or V
values.
c) vent chart starts from the top of the
unit.